Algebra 1 SOL review

What is the value of 2x+3y when x=5.3, y=6.5

How do you solve this equation in desmos?

15x-6=9

• graph equation, look for a vertical line crossing the x-axis

• ignore it

• Add up the 15, 6, and 9.

(x²+2x-1) +(2x²+2x+1)=?

• 3x²+4x

• I have no idea how to do this.

When adding or subtracting polynomials you want to.....

• combine like terms

• combine little terms

• combine any expressions that have an x in them

The slope of a vertical line is_____ and the slope of a horizontal line is_____?

• Both slopes are zero

• 0, undefined

• undefined, 0

Given the 2 equations below, solve the systems of equations by graphing on desmos.

( your answer must be written in this format, (x,y).

2x+y=5

3x-2y=4

What is the slope of the line in the picture?

• -2

• +2

• -1/2

• +1/2

Which of the following statements represents

4x+5

• four x's +5

• four times a number x added to five

• 9x

• the sum of five times a number added to four

If I move the line y=x+1 up 4, what is my new equation?

Hint, use desmos, and think of our work on parent functions going up and down.

• y=4x+5

• y=4x-5

• y=x+5

• y=x-5

What are three more words that mean x-intercept?

• root

• solution

• zero

• domain