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3 years ago

an equation for the line perpendicular to the line 4x + 8y = 7 having the same y -intercept as −3x + 5y = −2

1 answer:

8 0

4x + 8y = 7
8y = -4x + 7
y = -1/2x + 7/8 this equation has slope = -1/2

line perpendicular to the line 4x + 8y = 7, so the slope = 2

same y -intercept as −3x + 5y = −2
 y intercept means x = 0
 5y = −2
y = -2/5
so
b = -2/5

answer:
equation:

y = 2x - 2/5

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9514 1404 393

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Step-by-step explanation:

A graphing calculator solves this nicely, as shown in the attachment.

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