TutorMe homepage
Subjects
PRICING
COURSES
Start Free Trial
David W.
Tutor for two years, software developer for nine years, Currently heading my own company
Tutor Satisfaction Guarantee
PHP Programming
TutorMe
Question:

What is the difference between the unset() and unlink() functions?

David W.

Unset() is used to delete a variable from memory and is used for variables only. Unlink() is used to delete a file that is in the file handle.

HTML Programming
TutorMe
Question:

What is the HTML element for the largest heading (standard)?

David W.

<h1>. There are six headings ranging from <h1> to <h6>. <h1> is the tag with the biggest heading and is usually used for titles.

Algebra
TutorMe
Question:

Find the equation in slope-intercept form of the line that passes through the point (3, -3) and has a slope equal to 5.

David W.

Slope-intercept form is y = mx+b. m is the slope and b is the y-intercept. We are already given the slope: m = 5. We need to find the y-intercept next. We are given a point, so we will use the point slope formula given the point (x1, y1) = (3, -3). Point Slope: y - y1 = m(x - x1) Since (x1, y1) = (3, -3), x1 = 3, and y1 = -3. m = 5. y - (-3) = 5(x - 3) <-- plug in x1, y1, and m y + 3 = 5x - 15 <-- distribute 5(x-3) = 5x - 15 y = 5x - 18 <-- subtract 3 on both sides. Your b is -18, and therefore your equation is y = 5x - 18

Send a message explaining your
needs and David will reply soon.
Contact David