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retrest

6 years agoPosted 6 years ago. Direct link to retrest's post “How do you find the y int...”

How do you find the y intercept?

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(20 votes)

michael Li

6 years agoPosted 6 years ago. Direct link to michael Li's post “You can take the function...”

You can take the function f(x) = something (your funtion) so like f(x)=2x. you can input x=0 and find the output which would be the y intercept. So, lets actually have f(x) = 5x + 2. You input 0 for x and you get f(x) = 2. That is your y intercept

(26 votes)

Ani-Jay

7 years agoPosted 7 years ago. Direct link to Ani-Jay's post “How do you know where to ...”

How do you know where to put your intercepts when answering the problems.? I haven't been able to get 100% on the practice problems, because my answers need to be reversed, but I can't figure out where to place them.

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(11 votes)

bgale28

9 months agoPosted 9 months ago. Direct link to bgale28's post “in slope-intercept form, ...”

in slope-intercept form, ( y=mx+b ) b represents your y-intercept.

(5 votes)

AshwathMalaisamy

10 years agoPosted 10 years ago. Direct link to AshwathMalaisamy's post “for example how would you...”

for example how would you find the x intercept for a problem like this ?Y = x2 + 5x + 4

y = x squared plus five x plus four•

(5 votes)

Rachel

10 years agoPosted 10 years ago. Direct link to Rachel's post “It's a quadratic equation...”

It's a quadratic equation, which means it's a non-linear (is parabolic in shape). You can find the x-intercepts (usually there are 2, but there can be 1 or none) by completing the square, factoring or by using the quadratic formula. Which method I use depends on which one I think will make solving the problem easier. The easiest way to solve is to factor the quadratic equation.

x^2+5x+4=0We set it equal to zero because we are looking for the x intercepts.

When y is 0 where will the parabola cross the x-axisTo solve by factoring we ask ourselves: What two numbers add up to the middle term and are the product of the last term?

4*1=4 (last term)

4+1=5 (middle term)

(x+4) (x+1)

set them both equal to zero to find the x intercept

x+4=0

subtract 4 from both sides

x=-4

x+1=0

subtract 1 from both sides

x=-1

x intercepts are -4 and -1. Or the points where the parabola crosses the x-axis are (-4,0) and (-1,0).(10 votes)

Sara Beth

8 years agoPosted 8 years ago. Direct link to Sara Beth's post “Can't you find the interc...”

Can't you find the intercept by doing -b/2a, or is that finding the vertex?

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(5 votes)

KathyC

8 years agoPosted 8 years ago. Direct link to KathyC's post “A vertex is a corner, whe...”

A vertex is a corner, where two lines meet. A straight line by itself doesn't have a vertex.

The easiest way to find the x intercept is to figure out what value x will have when y = 0.

So if you have an equation of a line: 2y + 4x = 28

you substitue "0" in for your y and solve:

2 (0) + 4x = 28

4x = 28

x = 7

The x intercept is (7,0)(7 votes)

poodoo

a year agoPosted a year ago. Direct link to poodoo's post “at 0:48 where did 0 come ...”

at

0:48

where did 0 come from?•

(6 votes)

Venkata

a year agoPosted a year ago. Direct link to Venkata's post “We need to find the x int...”

We need to find the x intercept. So, as it is a point on the x axis, the y coordinate has to be 0. So, we substitute y = 0 into the equation.

(3 votes)

daP0l15hc0unt

6 years agoPosted 6 years ago. Direct link to daP0l15hc0unt's post “Slope intercept form is y...”

Slope intercept form is y=mx+b.

Is there a way to use the x-intercept instead of the y-intercept. Use p for the y-intercept in your equation.My attempt:

y = mx + b

0 = mx + b

0 = x + b/m

x = -b/m

let p be the x-intercept

therefore: p = -b/m

Therefore:y = mx - mp

Am I right?•

(4 votes)

KoJesko

6 years agoPosted 6 years ago. Direct link to KoJesko's post “If m = 3 and b = 2 (Subst...”

If m = 3 and b = 2 (Substitute) 0 = 3x + 2 (0 = mx + b) (Subtract b from both sides)

0-2 = 3x (y-b = mx) -2 = 3x (y-b = mx) (divide both sides by the amount x is multiplied by) -2/3 = x(4 votes)

Ammon Trump

7 years agoPosted 7 years ago. Direct link to Ammon Trump's post “How would I find the x an...”

How would I find the x and y intercepts and graph them if I have a function 3x - 5y=15

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(6 votes)

edenbercier

6 years agoPosted 6 years ago. Direct link to edenbercier's post “I'm confused at how he go...”

I'm confused at how he got 7/3 is equal to 6/3 + 1/3 ?

(1 vote)

rreid

7 months agoPosted 7 months ago. Direct link to rreid's post “i understood nothing in t...”

i understood nothing in the video

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(5 votes)

Angelina

2 months agoPosted 2 months ago. Direct link to Angelina's post “I can explain!The x-int...”

I can explain!

The x-intercept of a line is the point at which the line crosses the x-axis.

In other words, it’s the value of x when y equals zero in the equation of the line.

For a line represented by the equation

*y=mx+b*,

where m is the slope and b is the y-intercept, the x-intercept can be found by setting y to zero and solving for x.So, if we set y to zero, we get:

*0=mx+b*Solving for x gives us:

*x=−b/m*This value of x is the x-intercept of the line. It represents the point on the x-axis where the line intersects. If the line never crosses the x-axis, then it has no x-intercept.

For example, the line

*y=2x+3*has an x-intercept at

*x=−3/2*

or*x=−1.5*.This means the line crosses the x-axis at the point

*(-1.5, 0)*.I hope this explanation helps! Let me know if you have any other questions.

(0 votes)

Nakulisthebest

2 years agoPosted 2 years ago. Direct link to Nakulisthebest's post “I have a question what is...”

I have a question what is the equation of x intercept?

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(3 votes)

Kim Seidel

2 years agoPosted 2 years ago. Direct link to Kim Seidel's post “There is no equation. Yo...”

There is no equation. You take the linear equation that you have and you replace Y with 0. Then, solve for X. You will have a point on the line at (x-value, 0) where the x-value is the value you found. This point is where the line cross the x-axis (so, it is the x-intercept).

(2 votes)

Eliza Layco*ck

8 years agoPosted 8 years ago. Direct link to Eliza Layco*ck's post “What is a slope?”

What is a slope?

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(2 votes)

Aryan

8 years agoPosted 8 years ago. Direct link to Aryan's post “slope is basically chang...”

slope is basically change in y over change in x.the formula is (y1 - y2)/(x1 - x2)... where y1 and y2 are two different values of y and same for x respectively .

hope that helps(4 votes)