Find a set of parametric equations for y= 3x + 7, given the parameter t= 5 – 5x

Answer 1

from
t= 5 – 5x
5x = 5 - t
x = (5-t)/5

so in y = 3x+7
y = 3(5-t)/5 + 7
5y = 15 - 3t + 35
y = - 3t/5 + 10

x = (5-t)/5
y = - 3t/5 + 10