Kay = x
Mary is twice as old as Kay
⇒ Mary = 2x
Jane is 3 years older than Mary
⇒ Jane = 2x + 3
Answer: 2x + 3
Answer:
y = -2x - 16
Step-by-step explanation:
y = -2x + b
-2 = -2(-7) + b
-2 = 14 + b
b = -16
The plotted point will be reflected across the y-axis.
Answer:

Step-by-step explanation:
First find the <em>rate of change</em> [<em>slope</em>]:


Then plug these coordinates into the Slope-Intercept Formula instead of the <em>Point-Slope Formula</em> because you get it done much swiftly. It does not matter which ordered pair you choose:
15 = −1⅕[−10] + b
12

If you want it in <em>Standard Form</em>:
y = −1⅕x + 3
+1⅕x + 1⅕x
______________
[We do not want fractions in our Standard Equation, so multiply by the denominator to get rid of it.]
5[1⅕x + y = 3]

_______________________________________________
−3 = −1⅕[5] + b
−6

y = −1⅕x + 3
+1⅕x + 1⅕x
______________
[We do not want fractions in our Standard Equation, so multiply by the denominator to get rid of it.]
5[1⅕x + y = 3]

** You see? I told you it did not matter which ordered pair you choose because you will always get the exact same result.
I am joyous to assist you anytime.