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Stolb23 [73]
3 years ago
13

What are the intercepts of y=8x-18

Mathematics
2 answers:
swat323 years ago
7 0

Answer:

x-intercept=\frac{9}{4}

y-intercept=-18

Step-by-step explanation:

The y-intercept is where x is equal to 0, and the x-intercept is where y is equal to 0, so:

x-intercept=(x,0)\\y-intercept=(0,y)

The equation is written in slope-intercept form:

y=mx+b

m is the slope and b is the y-intercept, so the y-intercept is -18.

Now set the value of y to 0 to find the intercept of x:

0=8x-18

Solve for x. Add 18 to both sides:

0+18=8x-18+18\\18=8x

Divide both sides by 8:

\frac{18}{8}=\frac{8x}{8}  \\\\\frac{18}{8} =\frac{9}{4}\\ \\x=\frac{9}{4}

The x -intercept is \frac{9}{4}.

x-intercept=(\frac{9}{4},0)\\\\y-intercept=(0,-18)

:Done

rjkz [21]3 years ago
3 0

Step-by-step explanation:

<u>Step 1:  Find the y-intercept</u>

To find the y-intercept, you need to set the x-value to 0 and solve for y.

y = 8(0) - 18

y = 0 - 18

y = -18

(0, -18) ← y-int

<u>Step 2:  Find the x-intercept</u>

To find the x-intercept, you need to set the y-value to 0 and solve for x.

0 + 18 = 8x - 18 + 18

18 / 8 = 8x / 8

2.25 = x

(2.25, 0) ← x-int

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