How do you graph y= -1/2+3y=−12+3 by plotting points?

2 Answers
Tony B
Jun 18, 2018

Assumption: You mean the question as written.

Explanation:

Given: y=-1/2+3y=−12+3

=>y=2 1/2 = 2.5⇒y=212=2.5

What we have is y="some constant value"y=some constant value

This situation results in a straight line that is parallel to the x-axis and passes through the point (x,y) =(x,2 1/2)(x,y)=(x,212)

In other words: you can use any value you wish for xx but yy is always 2 1/2212

Plotting points:
Tony B

Tony B

Tony B
Jun 18, 2018

Assumption: You mean the question to be y=-1/2+3xy=−12+3x

Explanation:

One of the standardised forms is y=mx+cy=mx+c

Where mm is the gradient (slope) and cc is the y-intercept.

Thus we have:

y=mx+c color(white)("d") -> color(white)("d") y=3x-1/2y=mx+cd→dy=3x−12

Tony B

Tony B

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