Answer:
1) Domain = -3 ≤ x ≤ 2
Range = -4 ≤ y ≤ 5
Function? No
Step-by-step explanation:
From the given graph, we have;
The domain of the dot plot = -3 ≤ x ≤ 2
The range of the dot plot = -4 ≤ y ≤ 5
From the given data plot, we have that a straight line joining the data points is in the form of an arrow head with one value of the input (independent) variable, 'x', giving two values of the output (dependent) variable, 'y', such as the input, x = 1, gives two output, y = -2, and y = 3
Therefore, the relation is not a function as one input value produces two output values.
The time was 9:15am or 9:15pm depending on 4:15am or 4:15pm
Factor using ac method
mulitply 8 and -3
-24
find what 2 factors of -24 add to -2
-6 and 4
split middle up like that
8x²+4x-6x-3=0
gropu and factor
(8x²+4x)+(-6x-3)=0
4x(2x+1)+(-3)(2x+1)=0
undistribute
(4x-3)(2x+1)=0
set each to zero
4x-3=0
4x=3
x=3/4
2x+1=0
2x=-1
x=-1/2
x=-1/2 or 3/4