Question

Math! Help! Quiz: Graphing Linear Equations

Which linear equation is represented in the graph?

y = 2x – 1

y = –2x – 1

y = –2x 1

y = 2x 1
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Also 5 questions!

Answer 1

is there a graph

Answer 2

@Ultrilliam

Answer 3

This is what I came to ask

Answer 4

I thinks its D Evie

Answer 5

@EvieSwan2405

Answer 6

No it's B, second choice

Answer 7

In slope/intercept form, Americans say: \(y = mx + b\)

the intercept, ie \(y(x=0)\), is: \(b = 1\)

the slope is: \(m = \dfrac{\text{change in y}}{\text{change in x}} = \dfrac{-3-1}{2-0} =\dfrac{-4}{2} = -2\)

so you have: \(y = -2 x + 1\)

then check that.

\(y(2) = -2(2) + 1 = -3\)

\(y(0) = -2(0) + 1 = 1\)

looks OK