Answer:
Asanji drove for
hours before Huong caught up
Step-by-step explanation:
Let the time for which Asanji drove alone is "X" hours
Asanji and Huong met after three hours of driving of Huong.
Total time for which Asanji drove
hours
Thus, distance travelled by Asanji in
hours is equal to distance travelled by Huong in
hours

On solving the above equation, we get -

Asanji drove for
hours before Huong caught up
Answer:
yes
Step-by-step explanation:
If 2 lines are perpendicular then the product of their slopes = - 1
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
y = - x - 4 ← is in slope- intercept form
with slope m = - 1
5x - 5y = 20 ( subtract 5x from both sides )
- 5y = - 5x + 20 ( divide all terms by - 5 )
y = x - 4 ← in slope- intercept form
with slope m = 1
Thus product of their slopes is - 1 × 1 = - 1
Therefore the lines are perpendicular
Question 5: / Pregunta 5:
<u>b. x² + 3</u>
f(x) = 
\/
y = 
\/
x = 
\/
x² = 
\/
x² = y - 3
\/
x² + 3 = y
\/
x² + 3 = f(x)
Question 6: / Pregunta 6:
<u>b. Yes, but not one to one</u>
Two inputs have an output of 8 so it is not one to one, but no input has two different outputs so it is a function / Dos entradas tienen una salida de 8, por lo que no es una a una, pero ninguna entrada tiene dos salidas diferentes, por lo que es una función.