Answer:
Step-by-step explanation:
The slope-intercept form is 
, where m is the slope of the line and c is where the line crosses the 
-axis.
To calculate 
we can use the formula 
where 
is the difference in between two points and 
is the difference between 
.
Information we can get from the graph given: 
. Since 
is the point at which the line crosses the -axis.
To find let's get two points from the graph.
Point 1: 
Point 2: 
Now use the equation .
.
Now we have and , let's put them back into the general equation.
I don't know if this helps/if you have learned this yet but it is a characteristic of a parallelogram that opposite sides are congruent. If this does not help please respond and I will do my best to help! I don't know if I 100% understand what you are asking!
Answer:
Sydney's age is 28
Step-by-step explanation:
Let Devaughn be D
And Sydney be S
D=S+8..... equation 1
D+S=64...... equation 2
Substitute equation 1 to equation 2
S+8+S=64
2S+8=64
2S=64-8
2S=56
S=56/2
S=28
Hope it helps
Good luck
