The equation of a line with a slope of 4 that passes through (1, 2) is
y=4x+2
b)
The equation of a line with a slope of -3 that passes through (1, 4) is
y=−3x+7
c)
The equation of a line that passes through (0, 5) and (2, 9) is
2x−y=5
d)
The equation of a line with a slope of 7 that passes through (3, 4) is
y−4=7(x−3)
2.
Which three equations have exactly one solution?
Select THREE correct answers.
a)
5x+8=5x−15
b)
3x+4=7x−1
c)
3(x−12)=4x−36
d)
2(x−1)+x=2x−7
e)
4(2x−5)−3x=5x−20
3.
Armando throws a ball upward. The height of the ball, in meters, t seconds after being thrown is modeled by
h(t)=8t−5t2+4.
After how many seconds will the ball reach the ground?
4.
Rolando needs to solve the system of equations below
y = 2x - 4
3y = -x + 2
Choose the point that represents the solution to the systems of equations on the graph.
(a)
5.
Danna graphs the function f(x)=x2 and g(x)=f(x−3).
Choose the correct answer from each drop-down menu to complete the statement. The graph of g(x) is a
(a) (b)
of the graph of f(x).
เลือกจากคำด้านล่าง
horizontal translation
3 units to the right
3 units to the left
vertical translation
horizontal reflection
vertical reflection
3 units above
3 units below
over the line y =-3
over the line x=-3
6.
Chris bought 3 slices of cheese pizza and 4 slices of mushroom pizza for a total cost of $12.50. Brittany bought 3 slices of cheese pizza and 2 slices of mushroom pizza for a total cost of $8.50. How many dollars does one slice of mushroom pizza cost?
(a)
7.
Estrella graphs the function g(x)=x2 on a coordinate grid.
Which statements are true?
a)
The graph of 2g(x) is narrower than the graph of g(x).
b)
The graph of
g(x - 1 ) is 1 unit to the left of the graph of g(x).
c)
The graph of g(4x) is 4 units above the graph of g(x).
d)
The graph of
g(x) - 2 is 2 units below the graph of g(x).
8.
What is the vertex of the function f(x)=5x2+10x+4
on the grid? (a)
เลือกจากคำด้านล่าง
(-1, -1)
(1, -1)
(-1, 1)
(0, 4)
9.
Given f(x)=x2−36, which statement is true?
a)
The only zero, 6, can be found when
0=(x−6)(x−6).
b)
The only zero, 18, can be found when
0=(x−18)(x−18)
c)
The zeros, -6 and 6, can be found when
0=(x+6)(x−6)
d)
The zeros, -18 and 18, can be found when
0=(x+18)(x−18)
10.
A function is shown.
f(x)=7−4x
What is the value of f(−5)?
แป้นคำตอบ
mock algebra STAAR
คำถามทั้งหมด: 10
1.
b)
The equation of a line with a slope of -3 that passes through (1, 4) is
y=−3x+7
, d)
The equation of a line with a slope of 7 that passes through (3, 4) is
y−4=7(x−3)
2.
b)
3x+4=7x−1
, c)
3(x−12)=4x−36
, d)
2(x−1)+x=2x−7
3.
2
4.
(2,0), (2, 0)
5.
horizontal translation, 3 units to the right
6.
2.00, 2
7.
a)
The graph of 2g(x) is narrower than the graph of g(x).