One way to find the y int is to sub in 0 for x and solve for y
10x + 9y = 45
10(0) + 9y = 45
9y = 45 ...divide both sides by 9
y = 45/9 which equals 5
Answer:
Constraints:

Step-by-step explanation:
Let x represents the number of cards and y represents the number of cupcakes.
Carrie decides to sell cupcakes for $0.50 each.
Total amount earned from selling cupcakes 
Juanita decides to sell homemade cards for $2.25 each.
Total amount earned from selling cards 
As Carrie and Juanita need at least $125 to cover their start up costs,

Juanita plans to make at least 35 cards.

Carrie plans to sell cupcakes no less than 3 times the number of cards Juanita makes.

Constraints:

Answer:
Supplementary.
Step-by-step explanation:
In this case when put together, ∠2 & ∠3 create a straight line. A straight line is 180° in measurement, and the two angles are supplementary.
If the two angles meet together and create a right angle, then they are complementary, as, when combined, the two angles will form a 90° measurement.
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Answer:
There is no slope
Step-by-step explanation:
The slope is where it passes on the x-axis. It doesn't pass the x-axis. (I'm pretty sure this is right. I'm sorry if it isn't )