You just found that x = 3. That’s the same as the x-coordinate of the point of intersection. Let’s see if the corresponding y-value is the same, too. You can use either equation. What’s the value of y when x = 3? You can solve on paper, and then enter your answer on Zearn.

Question

You just found that x = 3. That’s the same as the x-coordinate of the point of intersection. Let’s see if the corresponding y-value is the same, too. You can use either equation. What’s the value of y when x = 3? You can solve on paper, and then enter your answer on Zearn.
y= 70 − 5x
y= 10 + 15x
When x= 3, y= 
.

GPT-4o mini · Answer

To find the corresponding $ y $-value when $ x = 3 $, we can substitute $ x = 3 $ into either equation. Let's use the first equation $ y = 70 - 5x $: $$ y = 70 - 5(3) $$ $$ y = 70 - 15 $$ $$ y = 55 $$ Now let's check using the second equation $ y = 10 + 15x $: $$ y = 10 + 15(3) $$ $$ y = 10 + 45 $$ $$ y = 55 $$ Both equations give us the same $ y $-value of $ 55 $. Therefore, when $ x = 3 $, $ y = 55 $.