Question

Uhlt test

Determine the intercepts of the line.
y = –2x - 21
x-intercept: (.
..)
y-intercept:(
.
)

Answer 1

Answer:

The y-intercept is -21. The x-intercept is -10.5 or
`-(21)/(2)`.

(0, -21) and (-10.5, 0)

Explanation:

To find the y-intercept, you would plug in 0 for x.

y = -2x - 21

y = -2(0) - 21

y = 0 - 21

y = -21

The y-intercept is -21.

To find the x-intercept, you would plug in 0 for y.

y = -2x - 21

0 = -2x - 21

2x = -21

x = -21/2

x = -10.5 or
`-(21)/(2)`

The x-intercept is -10.5 or
`-(21)/(2)`.