Linear Relations
What is the slope of the line y=3x+2?
3
x+5=12
x=7
What does SOH stand for in SOHCAHTOA?
Sine = opp / hyp
What is the standard form of a quadratic equation?
y=ax2+bx+c
What shape does the graph of a quadratic form?
parabola
Identify the y-intercept of y=−2x+5
5
3x=18
x=6
Find sin30∘
0.5
How many x-intercepts can a quadratic have?
0,1,2
f a>0, does the parabola open up or down?
up
Write the equation of a line with slope 4 and y-intercept −1
y=4x-1
x=7
A right triangle has an adjacent side of 7 and a hypotenuse of 25. Find cosθ
7/25
Find the value of ccc in y=2x2−5x+3
3
A ball is thrown upward. Why is a quadratic used to model its height?
Because the rate of change is not constant
Determine the slope of the line passing through (2, 3) and (6, 11)
m=2
How many solutions do parallel lines have?
0
In a triangle, side a=6, side b=8, and angle C=60∘
c = 7.2
State the axis of symmetry for y=x2−4x+1
x=2
The height of an object is given by h=−5t2+20t When does it hit the ground?
t=0 and t=4
Write the equation of the line passing through (−2, 4) with slope −3
y=-3x-2
y=2x
y=−x+6
(2,4)
In a triangle, angle A = 40°, side a=10, and side b=14. Find angle B
B = 64°
Identify the vertex of y=x2−6x+5
(3,-4)
What does the vertex represent in a height-time quadratic model
The max height