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How do you find the intercepts for $y = 4 x + 4$ $y=4x+4$ ?

1 Answer

Jun 12, 2015

To find the x intercept set $y = 0$ $y=0$ and solve for x.
To find the y intercept set $x = 0$ $x=0$ and solve for y.

Explanation:

x-intercept
$y = 4 x + 4$ $y=4x+4$
with $y = 0$ $y=0$ becomes
$XXXX$ $color(white)("XXXX")$ $0 = 4 x + 4$ $0=4x+4$
$XXXX$ $color(white)("XXXX")$ $x = - 1$ $x= -1$

y-intercept
$y = 4 x + 4$ $y=4x+4$
with $x = 0$ $x=0$ becomes
$XXXX$ $color(white)("XXXX")$ $y = 4 (0) + 4$ $y = 4(0) +4$
$XXXX$ $color(white)("XXXX")$ $y = 4$ $y = 4$

x-intercept is $(- 1)$ $(-1)$
y-intercept is $4$ $4$

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