Graphing
What is the first thing you graph when given a y=mx+b equation?
What is the y-intercept
What is the first step in solving an equation (or the first thing you should look for?
What is getting rid of parentheses
What is a the number in front of a variable called?
What is a coefficient
y=4x+20
y=-4x-3
neither
Find the slope between these two points:
(3,5) (2,3)
slope=2
What is the only kind of graph that has a slope?
Linear
What is it called when you multiply a number outside of the parentheses into all numbers inside the parentheses?
What is distributing
When you are solving an equation and add/subtract two variables or constants together you are doing what?
combining like terms
What is the definition of parallel lines?
Lines that never cross
3y+4x=2
-4/3
What is the slope of a horizontal line?
0
Simplify this expression to its simplest form:
3/5 + 4/3
29/15
When you divide fractions, what is the process?
multiply by the reciprocal
If a line is perpendicular to another line the slope is the _____________
negative reciprocal
x=-3
undefined
What is the y-intercept of y+4=-3(x-1)
y-intercept= -1
What do we have to do when we move something from one side of the equation to the other side?
Change the sign/ do the opposite
What is the greatest common factor of 32 and 56?
GCF: 8
Find the line parallel to y=2x+4 and passing through the point (1,4) - Answer must be in slope-intercept form!
y=2x+2
y=-6
0
Find the line perpendicular to 2x+5y=4 passing through (1,2)
Answer must be in slope-intercept form
Y=5/2x-1/2
What circumstance in solving equations would have to happen for there to be no solution?
Having to divide by zero at the end
Name all three forms and the equations for them
slope-intercept form: y=mx+b
Point-slope form: y-y1=m(x-x1)
Standard form: Ax+By=C
2x+3y=8
4x+6y=7
parallel: slope=-2/3
y-5=2(x-7)
slope=2