Answer:
redoing as sum ans appears to be not right...
Step-by-step explanation:
1. Which function pass through the points (1, 4), (2, 9), and (3, 16)?
A.y = (x + 1)2
B.y = (x + 3)2
C.y = 7x - 5
substitute x=1 n y=4, the only correct fn is A
2.Suppose that after swimming 1 lap in a pool, you can swim 10 laps in an hour. What is an equation that represents the total number of laps you have swam y in terms of the number of hours x?
A.y(x) = 10 + x
B.y(x) = 10(x + 1)
C.y(x) = 10x + 1
10 laps in an hour so in x hours , u swim 10x laps
total no. of laps, y=10x+1 where 1 is the initial lap already swum.
3.Is the following an arithmetic sequence? If so, what is the common difference? {4, 2, 0, -2, -4, -6, …}
Yes, d = -2
No
Yes, d = 2
each no is 2 smaller than the one before it: 2-4=0-2=-2-0=-2
so ans is yes, its an arith sequence n d = -2
Which function has the following graph?
a. y = -2x + 4
b. y = 2x + 4
c. y =12x + 4
no idea as there is no graph
What is the slope of the line containing (3, 5) and (2, 7)?
a. m = 2
b. m = -2
c. m = 125
slope, m = (7-5)/(2-3) = -2
The graph of a line passes through the point (-3, 2) and has a slope of 4. What is an equation of the line?
y = 4x - 10
y = 4x - 11
y = 4x+ 14
slope of 4 so the eqn is y = 4x + c
put x=2 n y=-3 into it, -3 = 4(2) + c
c = -11
ans is y = 4x - 11
Which line is parallel to y = 4x - 2?
y = -14x + 3
y = -4x + 5
y = 4x + 5
y = 4x + 5 has the same slope i.e. parellel to y = 4x -2
Which system of equations has (2, 3) as a solution?
a. y = 2x - 1
y = x + 1
b. y = 2x + 1
y = x - 1
c. y = 4x - 5
y = 2x
put x=2 n y=3 in, the only eqns that fit are a.
