graph y - 3 = 3(x + 1)

3 Answers | Add Yours

acompanioninthetardis's profile pic

acompanioninthetardis | Student, Undergraduate | (Level 1) Valedictorian

Posted on

y - 3 = 3(x + 1)

first turn this into a Y= mx+b form

y=3X+3+3

y= 3x+6

the slope, or m, in this case, 3, is always rise/run, so rise 3 run 1 from the y-intercept 6, so start at 6, then go up 3 spaces, and over one space, and place a dot, from that dot go up three spaces and then over one and create your line. 

1 reply Hide Replies

taangerine's profile pic

taangerine | Student, Grade 12 | (Level 1) Valedictorian

Posted on

 Rewrite the following equation: y - 3 = 3(x + 1)

  • Add 3 to both sides. `y=3(x+1)+3`
  • Distribute the 3 to x+1. `y=3(x)+3(1)+3`
  • Simplify. `y=3x+6`

Based on the `y=mx+b`

  • m stands for slope. In this case, m=3
  • b stands for y-intercept. In this case, b=6

Graph the y-intercept first. [It should just be a point at (0,6)]. Then, using the slope and do rise/run. In this case, it is 3/1 or... 3 up and 3 down. You can stop after you find the point or you can continue until you feel like stopping. No matter what, the equation is linear and will ALWAYS be a straight line. So, if it becomes crooked for any reason, there was an error & that need to be fixed. In the end, the equation should be graphed as 

 

1 reply Hide Replies

aruv's profile pic

aruv | High School Teacher | (Level 2) Valedictorian

Posted on

We have to plot graph of the function y-3=3(x+1). Let us write function as,

y=3+3x+3

=> y=3x+6                (i)

It  intersects x- axis at  x= -2 and y axis at y=6. It will represent a straight line which passes through (-2,0) and (0,6).

 

 

We’ve answered 318,929 questions. We can answer yours, too.

Ask a question