Question

(Maths)

Line R has the equation y = 4x + 7
Line P is parallel to line R and intersects the y-axis at (0,-5)
Write down the equation of line P in thee form y=mx+c

Answer 1

y = 4x + -5

Explanation:

Answer 2

`y=4x-5`

Explanation:

parallel lines have the same gradient so line P's gradient would also be 4

line P's equation is
`y=4x+c` but we don't know the c variable yet, so we just plug in the coordinate values

`-5=4(0)+c`

`-5=c`

so line P's equation is
`y=4x-5`