Question

If two lines having equations 3x+5y-16=0 and 4y-mx= 20 are parallel, find the value of m

Answer 1

m = -3/5

Explanation:

since both lines are given as "parallel", they will have the same slope, so we only need to solve for one.

we will put this equation into slope-intercept form to find the slope

3x + 5y - 16 = 0

3x + 5y = 16

5y = -3x + 16

y = -3/5x + 16/5

m = -3/5