What is a function whose graph forms a straight line called?
linear function
What is the x-coordinate of the point where the graph intersects the x axis called?
x- intercept
What is the slope of a horizontal line?
Zero
What is slope intercept form?
y=mx+b
y=3x - 10
linear
What is the standard form of a linear equation?
Ax+By=C
Find the y intercept: y=8
(0,8) or8
What is the slope of a vertical line?
Undefined
Write the equation in slope intercept form: slope=0, y intercept =-5
y=-5
What lines have the same slope?
parallel
Tell whether the function is linear : y=x+3
Linear
Find the y intercepts of y+5 = 3x
(0,-5) or -5
Find the slope of (4,-2) and(-1,2)
What is -4/5
Write the equation in slope intercept form: slope=4 and y-intercept is 0
y=4x
How do you know when you have perpendicular slopes?
When the product of the slopes equal -1
Tell whether the set of ordered pairs satisfies a linear function. Explain (2,4), (5,3) (8,2), (11,1)
Yes, constant change in 3 for x. Constant change of -1 in y
Find the y intercepts of y=-2x
0
Find the slope of (20,3000) and (60,2000)
What is -25
Graph the equation: y= 4x-3
See graph
I s the equation y=-3x2 linear or nonlinear?
nonlinear
Tell whether the function is linear and graph the function y = 2x
Yes it is linear.
Find the y intercepts of y= -3 Then graph it
(-0,-3) or -3
Find the slope of the equation: 3/2x -2 = y
3/2
Write the equation in slope intercept form and graph: slope=0 y-intercept = 2
y=2
When will be the line proportional?
constant rate