Question

Find the equation of a line with slope $-1$ and intercept of $5$ units on the positive direction of y-axis

• A. x + y = 4
• B. x + y = 5
• C. x + y = 2
• D. x + y = 3

Answer 1

The correct option is B

x + y = 5

Here, $m=-1$, and intercept $c=5$

We know that the equation of a straight line whose slope is $m$ and which makes an intercept $c$ on the y-axis is $y=mx+c$

$y=-1x+5$

$y=-x+5$

$x+y=5$